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Zeng X, Wang TW, Yamaguchi K, Hatakeyama S, Yamazaki S, Shimizu E, Imoto S, Furukawa Y, Johmura Y, Nakanishi M. M2 macrophage-derived TGF-β induces age-associated loss of adipogenesis through progenitor cell senescence. Mol Metab 2024:101943. [PMID: 38657734 DOI: 10.1016/j.molmet.2024.101943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 04/04/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024] Open
Abstract
OBJECTIVES Adipose tissue is an endocrine and energy storage organ composed of several different cell types, including mature adipocytes, stromal cells, endothelial cells, and a variety of immune cells. Adipose tissue aging contributes to the pathogenesis of metabolic dysfunction and is likely induced by crosstalk between adipose progenitor cells (APCs) and immune cells, but the underlying molecular mechanisms remain largely unknown. In this study, we revealed the biological role of p16high senescent APCs, and investigated the crosstalk between each cell type in the aged white adipose tissue. METHODS We performed the single-cell RNA sequencing (scRNA-seq) analysis on the p16high adipose cells sorted from aged p16-CreERT2/Rosa26-LSL-tdTomato mice. We also performed the time serial analysis on the age-dependent bulk RNA-seq datasets of human and mouse white adipose tissues to infer the transcriptome alteration of adipogenic potential within aging. RESULTS We show that M2 macrophage-derived TGF-β induces APCs senescence which impairs adipogenesis in vivo. p16high senescent APCs increase with age and show loss of adipogenic potential. The ligand-receptor interaction analysis reveals that M2 macrophages are the donors for TGF-β and the senescent APCs are the recipients. Indeed, treatment of APCs with TGF-β1 induces senescent phenotypes through mitochondrial ROS-mediated DNA damage in vitro. TGF-β1 injection into gonadal white adipose tissue (gWAT) suppresses adipogenic potential and induces fibrotic genes as well as p16 in APCs. A gWAT atrophy is observed in cancer cachexia by APCs senescence, whose induction appeared to be independent of TGF-β induction. CONCLUSIONS Our results suggest that M2 macrophage-derived TGF-β induces age-related lipodystrophy by APCs senescence. The TGF-β treatment induced DNA damage, mitochondrial ROS, and finally cellular senescence in APCs.
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Affiliation(s)
| | | | | | | | | | - Eigo Shimizu
- Division of Health Medical Intelligence, Human Genome Center, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Seiya Imoto
- Division of Health Medical Intelligence, Human Genome Center, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | | | - Yoshikazu Johmura
- Division of Cancer and Senescence Biology, Cancer Research Institute, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
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2
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Kawakami S, Johmura Y, Nakanishi M. Intracellular acidification and glycolysis modulate inflammatory pathway in senescent cells. J Biochem 2024:mvae032. [PMID: 38564227 DOI: 10.1093/jb/mvae032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/01/2024] [Indexed: 04/04/2024] Open
Abstract
Senescent cells accumulate in various organs with aging, and its accumulation induces chronic inflammation and age-related physiological dysfunctions. Several remodeling of intracellular environments has been identified in senescent cells, including enlargement of cell / nuclear size and intracellular acidification. Although these alterations of intracellular environments were reported to be involved in unique characteristics of senescent cells, the contribution of intracellular acidification to senescence-associated cellular phenotypes is poorly understood. Here, we identified that upregulation of TXNIP and its paralog ARRDC4 as a hallmark of intracellular acidification in addition to KGA-type GLS1. These genes were also upregulated in response to senescence-associated intracellular acidification. Neutralization of the intracellular acidic environment ameliorated not only senescence-related upregulation of TXNIP, ARRDC4, and KGA, but also inflammation-related genes, possibly through suppression of PDK-dependent anaerobic glycolysis. Furthermore, we found that expression of the intracellular acidification-induced genes, TXNIP and ARRDC4, correlated with inflammatory gene expression in heterogeneous senescent cell population in vitro and even in vivo, implying that the contribution of intracellular pH to senescence-associated cellular features, such as SASP.
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Affiliation(s)
- Satoshi Kawakami
- Division of Cancer Cell Biology, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
- Department of Biological Sciences, School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshikazu Johmura
- Division of Cancer and Senescence Biology, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192 Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, The Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
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3
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Baba T, Tomaru U, Hirao A, Mukaida N, Johmura Y. Autophagy Inhibition-induced Cytosolic DNA Sensing Combined with Differentiation Therapy Induces Irreversible Myeloid Differentiation in Leukemia Cells. Cancer Res Commun 2024; 4:849-860. [PMID: 38466568 PMCID: PMC10953625 DOI: 10.1158/2767-9764.crc-23-0507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/23/2024] [Accepted: 03/07/2024] [Indexed: 03/13/2024]
Abstract
Accumulating evidence indicates that various oncogenic mutations interfere with normal myeloid differentiation of leukemogenic cells during the early process of acute myeloid leukemia (AML) development. Differentiation therapy is a therapeutic strategy capable of terminating leukemic expansion by reactivating the differentiation potential; however, the plasticity and instability of leukemia cells counteract the establishment of treatments aimed at irreversibly inducing and maintaining their differentiation states. On the basis of our previous observation that autophagy inhibitor treatment induces the accumulation of cytosolic DNA and activation of cytosolic DNA-sensor signaling selectively in leukemia cells, we herein examined the synergistic effect of cytosolic DNA-sensor signaling activation with conventional differentiation therapy on AML. The combined treatment succeeded in inducing irreversible differentiation in AML cell lines. Mechanistically, cytosolic DNA was sensed by absent in melanoma 2 (AIM2), a cytosolic DNA sensor. Activation of the AIM2 inflammasome resulted in the accumulation of p21 through the inhibition of its proteasomal degradation, thereby facilitating the myeloid differentiation. Importantly, the combined therapy dramatically reduced the total leukemia cell counts and proportion of blast cells in the spleens of AML mice. Collectively, these findings indicate that the autophagy inhibition-cytosolic DNA-sensor signaling axis can potentiate AML differentiation therapy. SIGNIFICANCE Clinical effects on AML therapy are closely associated with reactivating the normal myeloid differentiation potential in leukemia cells. This study shows that autophagosome formation inhibitors activate the cytosolic DNA-sensor signaling, thereby augmenting conventional differentiation therapy to induce irreversible differentiation and cell growth arrest in several types of AML cell lines.
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Affiliation(s)
- Tomohisa Baba
- Division of Cancer and Senescence Biology, Kanazawa University, Kanazawa, Japan
| | - Utano Tomaru
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - Atsushi Hirao
- Division of Molecular Genetics, Cancer Research Institute, Kanazawa, Japan
- Nano Life Science Institute, Kanazawa University, Kanazawa, Japan
| | - Naofumi Mukaida
- Department of Forensic Medicine, Wakayama Medical University, Wakayama, Japan
| | - Yoshikazu Johmura
- Division of Cancer and Senescence Biology, Kanazawa University, Kanazawa, Japan
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4
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Suda K, Moriyama Y, Razali N, Chiu Y, Masukagami Y, Nishimura K, Barbee H, Takase H, Sugiyama S, Yamazaki Y, Sato Y, Higashiyama T, Johmura Y, Nakanishi M, Kono K. Plasma membrane damage limits replicative lifespan in yeast and induces premature senescence in human fibroblasts. Nat Aging 2024; 4:319-335. [PMID: 38388781 PMCID: PMC10950784 DOI: 10.1038/s43587-024-00575-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 01/26/2024] [Indexed: 02/24/2024]
Abstract
Plasma membrane damage (PMD) occurs in all cell types due to environmental perturbation and cell-autonomous activities. However, cellular outcomes of PMD remain largely unknown except for recovery or death. In this study, using budding yeast and normal human fibroblasts, we found that cellular senescence-stable cell cycle arrest contributing to organismal aging-is the long-term outcome of PMD. Our genetic screening using budding yeast unexpectedly identified a close genetic association between PMD response and replicative lifespan regulations. Furthermore, PMD limits replicative lifespan in budding yeast; upregulation of membrane repair factors ESCRT-III (SNF7) and AAA-ATPase (VPS4) extends it. In normal human fibroblasts, PMD induces premature senescence via the Ca2+-p53 axis but not the major senescence pathway, DNA damage response pathway. Transient upregulation of ESCRT-III (CHMP4B) suppressed PMD-dependent senescence. Together with mRNA sequencing results, our study highlights an underappreciated but ubiquitous senescent cell subtype: PMD-dependent senescent cells.
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Affiliation(s)
- Kojiro Suda
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yohsuke Moriyama
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Nurhanani Razali
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yatzu Chiu
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yumiko Masukagami
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Koutarou Nishimura
- Department of Hematology-Oncology, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Hyogo, Japan
| | - Hunter Barbee
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Hiroshi Takase
- Core Laboratory, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Shinju Sugiyama
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yuta Yamazaki
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Yoshikatsu Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
| | - Tetsuya Higashiyama
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
- Department of Biological Science, Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - Yoshikazu Johmura
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Keiko Kono
- Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan.
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5
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Li D, Johmura Y, Morimoto S, Doi M, Nakanishi K, Ozawa M, Tsunekawa Y, Inoue-Yamauchi A, Naruse H, Matsukawa T, Takeshita Y, Suzuki N, Aoki M, Nishiyama A, Zeng X, Konishi C, Suzuki N, Nishiyama A, Harris AS, Morita M, Yamaguchi K, Furukawa Y, Nakai K, Tsuji S, Yamazaki S, Yamanashi Y, Shimada S, Okada T, Okano H, Toda T, Nakanishi M. LONRF2 is a protein quality control ubiquitin ligase whose deficiency causes late-onset neurological deficits. Nat Aging 2023; 3:1001-1019. [PMID: 37474791 DOI: 10.1038/s43587-023-00464-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 06/29/2023] [Indexed: 07/22/2023]
Abstract
Protein misfolding is a major factor of neurodegenerative diseases. Post-mitotic neurons are highly susceptible to protein aggregates that are not diluted by mitosis. Therefore, post-mitotic cells may have a specific protein quality control system. Here, we show that LONRF2 is a bona fide protein quality control ubiquitin ligase induced in post-mitotic senescent cells. Under unperturbed conditions, LONRF2 is predominantly expressed in neurons. LONRF2 binds and ubiquitylates abnormally structured TDP-43 and hnRNP M1 and artificially misfolded proteins. Lonrf2-/- mice exhibit age-dependent TDP-43-mediated motor neuron (MN) degeneration and cerebellar ataxia. Mouse induced pluripotent stem cell-derived MNs lacking LONRF2 showed reduced survival, shortening of neurites and accumulation of pTDP-43 and G3BP1 after long-term culture. The shortening of neurites in MNs from patients with amyotrophic lateral sclerosis is rescued by ectopic expression of LONRF2. Our findings reveal that LONRF2 is a protein quality control ligase whose loss may contribute to MN degeneration and motor deficits.
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Affiliation(s)
- Dan Li
- Division of Cancer Cell Biology, The University of Tokyo, Tokyo, Japan
| | - Yoshikazu Johmura
- Division of Cancer Cell Biology, The University of Tokyo, Tokyo, Japan.
- Division of Cancer and Senescence Biology, Cancer Research Institute, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan.
| | - Satoru Morimoto
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Miyuki Doi
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Keiko Nakanishi
- Department of Pediatrics, Central Hospital, and Department of Disease Model, Institute for Developmental Research, Aichi Developmental Disability Center, Kasugai, Japan
| | - Manabu Ozawa
- Laboratory of Reproductive Systems Biology, The University of Tokyo, Tokyo, Japan
| | - Yuji Tsunekawa
- Division of Molecular and Medical Genetics, Center for Gene and Cell Therapy, The University of Tokyo, Tokyo, Japan
| | | | - Hiroya Naruse
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takashi Matsukawa
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yukio Takeshita
- Department of Neurology and Clinical Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Naoki Suzuki
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masashi Aoki
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ayumi Nishiyama
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Xin Zeng
- Laboratory of Functional Analysis in silico, Human Genome Center, The University of Tokyo, Tokyo, Japan
| | - Chieko Konishi
- Division of Cancer Cell Biology, The University of Tokyo, Tokyo, Japan
| | - Narumi Suzuki
- Division of Cancer Cell Biology, The University of Tokyo, Tokyo, Japan
| | - Atsuya Nishiyama
- Division of Cancer Cell Biology, The University of Tokyo, Tokyo, Japan
| | | | - Mariko Morita
- Division of Clinical Genome Research, The University of Tokyo, Tokyo, Japan
| | - Kiyoshi Yamaguchi
- Division of Clinical Genome Research, The University of Tokyo, Tokyo, Japan
| | - Yoichi Furukawa
- Division of Clinical Genome Research, The University of Tokyo, Tokyo, Japan
| | - Kenta Nakai
- Laboratory of Functional Analysis in silico, Human Genome Center, The University of Tokyo, Tokyo, Japan
| | - Shoji Tsuji
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Satoshi Yamazaki
- Division of Stem Cell Biology, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Laboratory of Stem Cell Therapy, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yuji Yamanashi
- Division of Genetics, The University of Tokyo, Tokyo, Japan
| | - Shoichi Shimada
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takashi Okada
- Division of Molecular and Medical Genetics, Center for Gene and Cell Therapy, The University of Tokyo, Tokyo, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Tatsushi Toda
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, The University of Tokyo, Tokyo, Japan.
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6
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Harris AS, Aratani S, Johmura Y, Suzuki N, Dan L, Nakanishi M. In vivo dynamics of senescence in rhabdomyolysis-induced acute kidney injury. Biochem Biophys Res Commun 2023; 673:121-130. [PMID: 37385006 DOI: 10.1016/j.bbrc.2023.06.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 06/14/2023] [Indexed: 07/01/2023]
Abstract
Cellular senescence is involved in the pathogenesis of various diseases, including acute kidney injury (AKI). AKI is defined as a sudden loss of kidney function. In severe AKI, irreversible loss of kidney cells can occur. Cellular senescence might contribute to this maladaptive tubular repair, though, its pathophysiological role in vivo is incompletely understood. In this study, we used p16-CreERT2-tdTomato mice in which cells with high p16 expression, a prototypical senescent marker, are labeled with tdTomato fluorescence. Then, we induced AKI by rhabdomyolysis and traced the cells with high p16 expression following AKI. We proved that the induction of senescence was observed predominantly in proximal tubular epithelial cells (PTECs) and occurred in a relatively acute phase within 1-3 days after AKI. These acute senescent PTECs were spontaneously eliminated by day 15. On the contrary, the generation of senescence in PTECs persisted during the chronic recovery phase. We also confirmed that the kidney function did not fully recover on day 15. These results suggest that the chronic generation of senescent PTECs might contribute to maladaptive recovery from AKI and lead to chronic kidney disease progression.
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Affiliation(s)
- Alexander S Harris
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Sae Aratani
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan; Department of Endocrinology, Metabolism and Nephrology, Graduate School of Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan.
| | - Yoshikazu Johmura
- Division of Cancer and Senescence Biology, Cancer Research Institute, Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Narumi Suzuki
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Li Dan
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan.
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7
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Li D, Wang TW, Aratani S, Omori S, Tamatani M, Johmura Y, Nakanishi M. Transcriptomic characterization of Lonrf1 at the single-cell level under pathophysiological conditions. J Biochem 2023; 173:459-469. [PMID: 36888978 PMCID: PMC10226518 DOI: 10.1093/jb/mvad021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 03/10/2023] Open
Abstract
The LONRF family of proteins consists of three isozymes, LONRF1-3, which harbors RING (really interesting new gene) domain and Lon substrate binding domain. We have recently identified LONRF2 as a protein quality control ubiquitin ligase that acts predominantly in neurons. LONRF2 selectively ubiquitylates misfolded or damaged proteins for degradation. LONRF2-/- mice exhibit late-onset neurological deficits. However, the physiological implications of other LONRF isozymes remain unclear. Here, we analysed Lonrf1 expression and transcriptomics at the single-cell level under normal and pathological conditions. We found that Lonrf1 was ubiquitously expressed in different tissues. Its expression in LSEC and Kupffer cells increased with age in the liver. Lonrf1high Kupffer cells showed activation of regulatory pathways of peptidase activity. In normal and NASH (nonalcoholic steatohepatitis) liver, Lonrf1high LSECs showed activation of NF-kB and p53 pathways and suppression of IFNa, IFNg and proteasome signalling independent of p16 expression. During wound healing, Lonrf1high/p16low fibroblasts showed activation of cell growth and suppression of TGFb and BMP (bone morphogenetic protein) signalling, whereas Lonrf1high/p16high fibroblasts showed activation of WNT (wingless and Int-1) signalling. These results suggest that although Lonrf1 does not seem to be associated with senescence induction and phenotypes, LONRF1 may play a key role in linking oxidative damage responses and tissue remodelling during wound healing in different modes in senescent and nonsenescent cells.
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Affiliation(s)
- Dan Li
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokane-dai, Minato-ku, Tokyo 108-8639, Japan
| | - Teh-Wei Wang
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokane-dai, Minato-ku, Tokyo 108-8639, Japan
| | - Sae Aratani
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokane-dai, Minato-ku, Tokyo 108-8639, Japan
- Department of Endocrinology, Metabolism, and Nephrology, Graduate School of Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan
| | - Satotaka Omori
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokane-dai, Minato-ku, Tokyo 108-8639, Japan
| | - Maho Tamatani
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokane-dai, Minato-ku, Tokyo 108-8639, Japan
| | - Yoshikazu Johmura
- Division of Cancer and Senescence Biology, Cancer Research Institute, Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokane-dai, Minato-ku, Tokyo 108-8639, Japan
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8
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Postmus AC, Kruit JK, Eilers RE, Havinga R, Koster MH, Johmura Y, Nakanishi M, van de Sluis B, Jonker JW. The chemotherapeutic drug doxorubicin does not exacerbate p16 Ink4a-positive senescent cell accumulation and cardiometabolic disease development in young adult female LDLR-deficient mice. Toxicol Appl Pharmacol 2023; 468:116531. [PMID: 37088304 DOI: 10.1016/j.taap.2023.116531] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/05/2023] [Accepted: 04/19/2023] [Indexed: 04/25/2023]
Abstract
Cancer survivors who received chemotherapy, such as the anthracycline doxorubicin (DOX), have an increased risk of developing complications later in life, including the development of chronic metabolic diseases. Although the etiology of this increased risk for late metabolic complications in cancer survivors is poorly understood, a causal role of therapy-induced senescent cells has been suggested. To study the role of cellular senescence in chemotherapy-induced metabolic complications, young adult female low-density lipoprotein receptor-deficient (Ldlr-/-)-p16-3MR mice, in which p16Ink4a-positive (p16Ink4a+) senescent cells can be genetically eliminated, were treated with four weekly injections of DOX (2.5 mg/kg) followed by a high-fat high-cholesterol diet for 12 weeks. While DOX treatment induced known short-term effects, such as reduction in body weight, gonadal fat mass, and adipose tissue inflammation, it was not associated with significant long-term effects on glucose homeostasis, hepatic steatosis, or atherosclerosis. We further found no evidence of DOX-induced accumulation of p16Ink4a+-senescent cells at 1 or 12 weeks after DOX treatment. Neither did we observe an effect of elimination of p16Ink4a+-senescent cells on the development of diet-induced cardiometabolic complications in DOX-treated mice. Other markers for senescence were generally also not affected except for an increase in p21 and Cxcl10 in gonadal white adipose tissue long-term after DOX treatment. Together, our study does not support a significant role for p16Ink4a+-senescent cells in the development of diet-induced cardiometabolic disease in young adult DOX-treated female Ldlr-/- mice. These findings illustrate the need of further studies to understand the link between cancer therapy and cardiometabolic disease development in cancer survivors.
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Affiliation(s)
- Andrea C Postmus
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
| | - Janine K Kruit
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
| | - Roos E Eilers
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
| | - Rick Havinga
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
| | - Mirjam H Koster
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
| | - Yoshikazu Johmura
- Division of Cancer and Senescence Biology, Cancer Research Institute, Institute for Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Bart van de Sluis
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands
| | - Johan W Jonker
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, the Netherlands.
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9
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Nakano Y, Johmura Y. Targeting cellular senescence as a therapeutic approach in non-alcoholic steatohepatitis. Ann Hepatol 2023; 28:100900. [PMID: 36925209 DOI: 10.1016/j.aohep.2023.100900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 02/08/2023] [Indexed: 03/18/2023]
Affiliation(s)
- Yasuhiro Nakano
- Department of Cancer and Senescence Biology, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan.
| | - Yoshikazu Johmura
- Department of Cancer and Senescence Biology, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan.
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10
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Wang TW, Johmura Y, Suzuki N, Omori S, Migita T, Yamaguchi K, Hatakeyama S, Yamazaki S, Shimizu E, Imoto S, Furukawa Y, Yoshimura A, Nakanishi M. Blocking PD-L1-PD-1 improves senescence surveillance and ageing phenotypes. Nature 2022; 611:358-364. [PMID: 36323784 DOI: 10.1038/s41586-022-05388-4] [Citation(s) in RCA: 96] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 09/27/2022] [Indexed: 11/05/2022]
Abstract
The accumulation of senescent cells is a major cause of age-related inflammation and predisposes to a variety of age-related diseases1. However, little is known about the molecular basis underlying this accumulation and its potential as a target to ameliorate the ageing process. Here we show that senescent cells heterogeneously express the immune checkpoint protein programmed death-ligand 1 (PD-L1) and that PD-L1+ senescent cells accumulate with age in vivo. PD-L1- cells are sensitive to T cell surveillance, whereas PD-L1+ cells are resistant, even in the presence of senescence-associated secretory phenotypes (SASP). Single-cell analysis of p16+ cells in vivo revealed that PD-L1 expression correlated with higher levels of SASP. Consistent with this, administration of programmed cell death protein 1 (PD-1) antibody to naturally ageing mice or a mouse model with normal livers or induced nonalcoholic steatohepatitis reduces the total number of p16+ cells in vivo as well as the PD-L1+ population in an activated CD8+ T cell-dependent manner, ameliorating various ageing-related phenotypes. These results suggest that the heterogeneous expression of PD-L1 has an important role in the accumulation of senescent cells and inflammation associated with ageing, and the elimination of PD-L1+ senescent cells by immune checkpoint blockade may be a promising strategy for anti-ageing therapy.
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Affiliation(s)
- Teh-Wei Wang
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yoshikazu Johmura
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.
- Division of Cancer and Senescence Biology, Cancer Research Institute, Kanazawa University, Kakuma, Kanazawa, Japan.
| | - Narumi Suzuki
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Satotaka Omori
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Toshiro Migita
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Kiyoshi Yamaguchi
- Division of Clinical Genome Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Seira Hatakeyama
- Division of Clinical Genome Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Satoshi Yamazaki
- Division of Stem Cell Biology, Center for Stem Cell Biology and Regenerative Medicine, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- Laboratory of Stem Cell Therapy, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Eigo Shimizu
- Division of Health Medical Intelligence, Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Seiya Imoto
- Division of Health Medical Intelligence, Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yoichi Furukawa
- Division of Clinical Genome Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan.
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11
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Reyes N, Krasilnikov M, Allen NC, Lee J, Hyams B, Zhou M, Ravishankar S, Cassandras M, Wang C, Khan I, Matatia P, Johmura Y, Molofsky A, Matthay M, Nakanishi M, Sheppard D, Campisi J, Peng T. Sentinel p16INK4a+ cells in the basement membrane form a reparative niche in the lung. Science 2022; 378:192-201. [PMID: 36227993 PMCID: PMC10621323 DOI: 10.1126/science.abf3326] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We engineered an ultrasensitive reporter of p16INK4a, a biomarker of cellular senescence. Our reporter detected p16INK4a-expressing fibroblasts with certain senescent characteristics that appeared shortly after birth in the basement membrane adjacent to epithelial stem cells in the lung. Furthermore, these p16INK4a+ fibroblasts had enhanced capacity to sense tissue inflammation and respond through their increased secretory capacity to promote epithelial regeneration. In addition, p16INK4a expression was required in fibroblasts to enhance epithelial regeneration. This study highlights a role for p16INK4a+ fibroblasts as tissue-resident sentinels in the stem cell niche that monitor barrier integrity and rapidly respond to inflammation to promote tissue regeneration.
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Affiliation(s)
- Nabora Reyes
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
- Bakar Aging Research Institute, University of California San Francisco
| | - Maria Krasilnikov
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Nancy C. Allen
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Jinyoung Lee
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Ben Hyams
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Minqi Zhou
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Supriya Ravishankar
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Monica Cassandras
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Chaoqun Wang
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Imran Khan
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | - Peri Matatia
- Department of Laboratory Medicine, University of California San Francisco
| | | | - Ari Molofsky
- Department of Laboratory Medicine, University of California San Francisco
| | - Michael Matthay
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | | | - Dean Sheppard
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
| | | | - Tien Peng
- Department of Medicine, Pulmonary and Critical Care Division, University of California San Francisco
- Bakar Aging Research Institute, University of California San Francisco
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12
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Zhu J, Wu W, Togashi Y, Taira Nihira N, Johmura Y, Zhu D, Nakanishi M, Miyoshi Y, Ohta T. Alteration of Trop-2 expression in breast cancer cells by clinically used therapeutic agents and acquired tamoxifen resistance. Breast Cancer 2022; 29:1076-1087. [PMID: 35882754 PMCID: PMC9587948 DOI: 10.1007/s12282-022-01389-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/07/2022] [Indexed: 11/28/2022]
Abstract
Background Sacituzumab govitecan is an antibody–drug conjugate that delivers SN-38, an active metabolite of irinotecan, to the target molecule, trophoblast cell-surface antigen 2 (Trop-2). It is a promising drug for triple-negative breast cancer and is anticipated to be effective for luminal breast cancer. The efficacy of the agent relies on the expression of Trop-2 rather than its intracellular function. However, conditions that alter the Trop-2 expression have not been well investigated. Methods We tested a range of clinically related treatments for their effect on Trop-2 expression in cultured breast cancer cell lines. Results The expression level of Trop-2 differed among cell lines, independent of their subtypes, and was highly variable on treatment with kinase inhibitors, tamoxifen, irradiation, and chemotherapeutic agents including irinotecan. While inhibitors of AKT, RSK, and p38 MAPK suppressed the Trop-2 expression, tamoxifen treatment significantly increased Trop-2 expression in luminal cancer cell lines. Notably, luminal cancer cells with acquired resistance to tamoxifen also exhibited higher levels of Trop-2. We identified transcription factor EB (TFEB) as a possible mechanism underlying tamoxifen-induced elevation of Trop-2 expression. Tamoxifen triggers dephosphorylation of TFEB, an active form of TFEB, and the effect of tamoxifen on Trop-2 was prevented by depletion of TFEB. A luciferase reporter assay showed that Trop-2 induction by TFEB was dependent on a tandem E-box motif within the Trop-2 promoter region. Conclusions Overall, these results suggest that the effectiveness of sacituzumab govitecan could be altered by concomitant treatment and that tamoxifen could be a favorable agent for combined therapy. Supplementary Information The online version contains supplementary material available at 10.1007/s12282-022-01389-3.
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Affiliation(s)
- Jing Zhu
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan.,Department of Breast Medicine, Foshan Maternity and Child Healthcare Hospital, Southern Medical University, Foshan, China
| | - Wenwen Wu
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Yukiko Togashi
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Naoe Taira Nihira
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Yoshikazu Johmura
- Department of Cancer and Senescence Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.,Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Dajiang Zhu
- Department of Breast Medicine, Foshan Maternity and Child Healthcare Hospital, Southern Medical University, Foshan, China
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yasuo Miyoshi
- Division of Breast and Endocrine Surgery, Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Tomohiko Ohta
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan.
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13
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Suzuki N, Johmura Y, Wang TW, Migita T, Wu W, Noguchi R, Yamaguchi K, Furukawa Y, Nakamura S, Miyoshi I, Yoshimori T, Ohta T, Nakanishi M. TP53/p53-FBXO22-TFEB controls basal autophagy to govern hormesis. Autophagy 2021; 17:3776-3793. [PMID: 33706682 DOI: 10.1080/15548627.2021.1897961] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Preconditioning with a mild stressor such as fasting is a promising way to reduce severe side effects from subsequent chemo- or radiotherapy. However, the underlying mechanisms have been largely unexplored. Here, we demonstrate that the TP53/p53-FBXO22-TFEB (transcription factor EB) axis plays an essential role in this process through upregulating basal macroautophagy/autophagy. Mild stress-activated TP53 transcriptionally induced FBXO22, which in turn ubiquitinated KDM4B (lysine-specific demethylase 4B) complexed with MYC-NCOR1 suppressors for degradation, leading to transcriptional induction of TFEB. Upregulation of autophagy-related genes by increased TFEB dramatically enhanced autophagic activity and cell survival upon following a severe stressor. Mitogen-induced AKT1 activation counteracted this process through the phosphorylation of KDM4B, which inhibited FBXO22-mediated ubiquitination. Additionally, fbxo22-/- mice died within 10 h of birth, and their mouse embryonic fibroblasts (MEFs) showed a lowered basal autophagy, whereas FBXO22-overexpressing mice were resistant to chemotherapy. Taken together, these results suggest that TP53 upregulates basal autophagy through the FBXO22-TFEB axis, which governs the hormetic effect in chemotherapy.Abbreviations: BBC3/PUMA: BCL2 binding component 3; CDKN1A/p21: cyclin dependent kinase inhibitor 1A; ChIP-seq: chromatin immunoprecipitation followed by sequencing; DDB2: damage specific DNA binding protein 2; DRAM: DNA damage regulated autophagy modulator; ESR/ER: estrogen receptor 1; FMD: fasting mimicking diet; HCQ: hydroxychloroquine; KDM4B: lysine-specific demethylase 4B; MAP1LC3/LC3: microtubule associated protein 1 light chain 3 alpha; MEFs: mouse embryonic fibroblasts; MTOR: mechanistic target of rapamycin kinase; NCOR1: nuclear receptor corepressor 1; SCF: SKP1-CUL-F-box protein; SQSTM1: sequestosome 1; TFEB: transcription factor EB.
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Affiliation(s)
- Narumi Suzuki
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yoshikazu Johmura
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Teh-Wei Wang
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Toshiro Migita
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Wenwen Wu
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Rei Noguchi
- Division of Clinical Genome Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Kiyoshi Yamaguchi
- Division of Clinical Genome Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yoichi Furukawa
- Division of Clinical Genome Research, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Shuhei Nakamura
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Ichiro Miyoshi
- Department of Laboratory Animal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tamotsu Yoshimori
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Tomohiko Ohta
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
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14
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Johmura Y, Yamanaka T, Omori S, Wang TW, Sugiura Y, Matsumoto M, Suzuki N, Kumamoto S, Yamaguchi K, Hatakeyama S, Takami T, Yamaguchi R, Shimizu E, Ikeda K, Okahashi N, Mikawa R, Suematsu M, Arita M, Sugimoto M, Nakayama KI, Furukawa Y, Imoto S, Nakanishi M. Senolysis by glutaminolysis inhibition ameliorates various age-associated disorders. Science 2021; 371:265-270. [DOI: 10.1126/science.abb5916] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 09/14/2020] [Accepted: 11/13/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Yoshikazu Johmura
- Division of Cancer Cell Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Takehiro Yamanaka
- Division of Cancer Cell Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Satotaka Omori
- Division of Cancer Cell Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Teh-Wei Wang
- Division of Cancer Cell Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Yuki Sugiura
- Department of Biochemistry, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo 160-8582, Japan
| | - Masaki Matsumoto
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Narumi Suzuki
- Division of Cancer Cell Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Soichiro Kumamoto
- Division of Cancer Cell Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Kiyoshi Yamaguchi
- Clinical Genome Research, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Seira Hatakeyama
- Clinical Genome Research, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Tomoyo Takami
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Rui Yamaguchi
- Human Genome Center, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Eigo Shimizu
- Human Genome Center, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Kazutaka Ikeda
- RIKEN Center for Integrative Medical Sciences, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Nobuyuki Okahashi
- RIKEN Center for Integrative Medical Sciences, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Ryuta Mikawa
- Research Institute, National Center for Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
| | - Makoto Suematsu
- Department of Biochemistry, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo 160-8582, Japan
| | - Makoto Arita
- RIKEN Center for Integrative Medical Sciences, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
- Division of Physiological Chemistry and Metabolism, Graduate School of Pharmaceutical Sciences, Keio University, Shibakoen, Minato-ku, Tokyo 105-0011, Japan
| | - Masataka Sugimoto
- Research Institute, National Center for Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
| | - Keiichi I. Nakayama
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Yoichi Furukawa
- Clinical Genome Research, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Seiya Imoto
- Health Intelligence Center, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
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15
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Pauty J, Nakano S, Usuba R, Nakajima T, Johmura Y, Omori S, Sakamoto N, Kikuchi A, Nakanishi M, Matsunaga YT. A 3D tissue model-on-a-chip for studying the effects of human senescent fibroblasts on blood vessels. Biomater Sci 2021; 9:199-211. [DOI: 10.1039/d0bm01297a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Senescent cells modify their environment and cause tissue aging that leads to organ dysfunction. Developing strategies for healthy aging rises a need for in vitro models that enables to study senescence and senotherapeutics at a tissue level.
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Affiliation(s)
- Joris Pauty
- Institute of Industrial Science
- The University of Tokyo
- Tokyo 153-8505
- Japan
| | - Shizuka Nakano
- Institute of Industrial Science
- The University of Tokyo
- Tokyo 153-8505
- Japan
- Department of Materials Science and Technology
| | - Ryo Usuba
- Institute of Industrial Science
- The University of Tokyo
- Tokyo 153-8505
- Japan
| | - Tadaaki Nakajima
- Institute of Industrial Science
- The University of Tokyo
- Tokyo 153-8505
- Japan
| | - Yoshikazu Johmura
- Division of Cancer Cell Biology
- Department of Cancer Biology
- Institute of Medical Science
- The University of Tokyo
- Tokyo 108-8639
| | - Satotaka Omori
- Division of Cancer Cell Biology
- Department of Cancer Biology
- Institute of Medical Science
- The University of Tokyo
- Tokyo 108-8639
| | - Naoya Sakamoto
- Graduate School of Systems Design
- Tokyo Metropolitan University
- Tokyo
- 192-0397
- Japan
| | - Akihiko Kikuchi
- Department of Materials Science and Technology
- Faculty of Industrial Science and Technology
- Tokyo University of Science
- Tokyo 125-8585
- Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology
- Department of Cancer Biology
- Institute of Medical Science
- The University of Tokyo
- Tokyo 108-8639
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16
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Nakanishi K, Niida H, Tabata H, Ito T, Hori Y, Hattori M, Johmura Y, Yamada C, Ueda T, Takeuchi K, Yamada K, Nagata KI, Wakamatsu N, Kishi M, Pan YA, Ugawa S, Shimada S, Sanes JR, Higashi Y, Nakanishi M. Isozyme-Specific Role of SAD-A in Neuronal Migration During Development of Cerebral Cortex. Cereb Cortex 2020; 29:3738-3751. [PMID: 30307479 DOI: 10.1093/cercor/bhy253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 08/18/2018] [Indexed: 11/13/2022] Open
Abstract
SAD kinases regulate presynaptic vesicle clustering and neuronal polarization. A previous report demonstrated that Sada-/- and Sadb-/- double-mutant mice showed perinatal lethality with a severe defect in axon/dendrite differentiation, but their single mutants did not. These results indicated that they were functionally redundant. Surprisingly, we show that on a C57BL/6N background, SAD-A is essential for cortical development whereas SAD-B is dispensable. Sada-/- mice died within a few days after birth. Their cortical lamination pattern was disorganized and radial migration of cortical neurons was perturbed. Birth date analyses with BrdU and in utero electroporation using pCAG-EGFP vector showed a delayed migration of cortical neurons to the pial surface in Sada-/- mice. Time-lapse imaging of these mice confirmed slow migration velocity in the cortical plate. While the neurites of hippocampal neurons in Sada-/- mice could ultimately differentiate in culture to form axons and dendrites, the average length of their axons was shorter than that of the wild type. Thus, analysis on a different genetic background than that used initially revealed a nonredundant role for SAD-A in neuronal migration and differentiation.
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Affiliation(s)
- Keiko Nakanishi
- Department of Perinatology, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Japan.,Department of Pediatrics, Central Hospital, Aichi Human Service Center, Kasugai, Japan
| | - Hiroyuki Niida
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Department of Molecular Biology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hidenori Tabata
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Japan
| | - Tsuyoshi Ito
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Yuki Hori
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Madoka Hattori
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Division of Cancer Cell Biology, Department of Cancer Biology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Chisato Yamada
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Takashi Ueda
- Department of Anatomy and Neuroscience, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Kosei Takeuchi
- Department of Medical Biology, Aichi Medical University, Nagakute, Aichi, Japan
| | - Kenichiro Yamada
- Department of Genetics, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Japan
| | - Koh-Ichi Nagata
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Japan
| | - Nobuaki Wakamatsu
- Department of Genetics, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Japan
| | - Masashi Kishi
- Neuroscience Laboratory, Research Institute, Nozaki Tokushukai Hospital, Daito, Osaka, Japan
| | - Y Albert Pan
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA.,Developmental and Translational Neurobiology Center, Virginia Tech Carilion Research Institute, Roanoke, VA, USA
| | - Shinya Ugawa
- Department of Anatomy and Neuroscience, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Shoichi Shimada
- Department of Anatomy and Neuroscience, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Joshua R Sanes
- Department of Molecular and Cellular Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA
| | - Yujiro Higashi
- Department of Perinatology, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Japan
| | - Makoto Nakanishi
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Division of Cancer Cell Biology, Department of Cancer Biology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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17
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Ieda D, Negishi Y, Miyamoto T, Johmura Y, Kumamoto N, Kato K, Miyoshi I, Nakanishi M, Ugawa S, Oishi H, Saitoh S. Two mouse models carrying truncating mutations in Magel2 show distinct phenotypes. PLoS One 2020; 15:e0237814. [PMID: 32804975 PMCID: PMC7430741 DOI: 10.1371/journal.pone.0237814] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 08/02/2020] [Indexed: 12/14/2022] Open
Abstract
Schaaf-Yang syndrome (SYS) is a neurodevelopmental disorder caused by truncating variants in the paternal allele of MAGEL2, located in the Prader-Willi critical region, 15q11-q13. Although the phenotypes of SYS overlap those of Prader-Willi syndrome (PWS), including neonatal hypotonia, feeding problems, and developmental delay/intellectual disability, SYS patients show autism spectrum disorder and joint contractures, which are atypical phenotypes for PWS. Therefore, we hypothesized that the truncated Magel2 protein could potentially produce gain-of-function toxic effects. To test the hypothesis, we generated two engineered mouse models; one, an overexpression model that expressed the N-terminal region of Magel2 that was FLAG tagged with a strong ubiquitous promoter, and another, a genome-edited model that carried a truncating variant in Magel2 generated using the CRISPR/Cas9 system. In the overexpression model, all transgenic mice died in the fetal or neonatal period indicating embryonic or neonatal lethality of the transgene. Therefore, overexpression of the truncated Magel2 could show toxic effects. In the genome-edited model, we generated a mouse model carrying a frameshift variant (c.1690_1924del; p(Glu564Serfs*130)) in Magel2. Model mice carrying the frameshift variant in the paternal or maternal allele of Magel2 were termed Magel2P:fs and Magel2M:fs, respectively. The imprinted expression and spatial distribution of truncating Magel2 transcripts in the brain were maintained. Although neonatal Magel2P:fs mice were lighter than wildtype littermates, Magel2P:fs males and females weighed the same as their wildtype littermates by eight and four weeks of age, respectively. Collectively, the overexpression mouse model may recapitulate fetal or neonatal death, which are the severest phenotypes for SYS. In contrast, the genome-edited mouse model maintains genomic imprinting and distribution of truncated Magel2 transcripts in the brain, but only partially recapitulates SYS phenotypes. Therefore, our results imply that simple gain-of-function toxic effects may not explain the patho-mechanism of SYS, but rather suggest a range of effects due to Magel2 variants as in human SYS patients.
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Affiliation(s)
- Daisuke Ieda
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yutaka Negishi
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Tomomi Miyamoto
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yoshikazu Johmura
- Division of Cancer Cell Biology, Department of Cancer Biology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Natsuko Kumamoto
- Department of Anatomy and Neuroscience, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kohji Kato
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya Japan
| | - Ichiro Miyoshi
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Department of Cancer Biology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Shinya Ugawa
- Department of Anatomy and Neuroscience, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hisashi Oishi
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- * E-mail:
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Johmura Y, Harris AS, Ohta T, Nakanishi M. FBXO22, an epigenetic multiplayer coordinating senescence, hormone signaling, and metastasis. Cancer Sci 2020; 111:2718-2725. [PMID: 32536008 PMCID: PMC7419058 DOI: 10.1111/cas.14534] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 12/12/2022] Open
Abstract
Ubiquitin‐dependent protein degradation has been implicated in the control of various cellular processes such as cell cycle control, transcriptional regulation, DNA damage repair, and apoptosis, many of which are involved in the initiation, progression, metastasis, and drug resistance of cancers. E3 ubiquitin ligases are known to be the second most prevalent cancer‐related functional gene family next to protein kinases. Of these, FBXO22, an F‐box receptor subunit of SCF E3 ligase, has recently been proposed to play a critical role in multiple aspects related to cancer development and therapy response. Firstly, FBXO22 is a key regulator of senescence induction through ubiquitylation of p53 for degradation. FBXO22 also acts as a molecular switch for the antagonistic and agonistic actions of selective estrogen receptor modulators (SERM) and determines the sensitivity of breast cancer to SERM by ubiquitylating KDM4B complexed with unliganded or SERMs‐bound estrogen receptor (ER). Furthermore, FBXO22 binds to Bach1, a pro‐metastatic transcription factor, suppressing Bach1‐driven metastasis of lung adenocarcinoma, and loss of FBXO22 facilitates metastasis. These findings, as well as other reports, unveiled strikingly important roles of FBXO22 in cancer development and therapeutic strategy. In this review, we summarize recent findings of how FBXO22 regulates major cancer suppression pathways.
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Affiliation(s)
- Yoshikazu Johmura
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Minato-ku, Japan
| | - Alexander S Harris
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Minato-ku, Japan
| | - Tomohiko Ohta
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Minato-ku, Japan
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19
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Johmura Y, Maeda I, Suzuki N, Wu W, Goda A, Morita M, Yamaguchi K, Yamamoto M, Nagasawa S, Kojima Y, Tsugawa K, Inoue N, Miyoshi Y, Osako T, Akiyama F, Maruyama R, Inoue JI, Furukawa Y, Ohta T, Nakanishi M. Fbxo22-mediated KDM4B degradation determines selective estrogen receptor modulator activity in breast cancer. J Clin Invest 2018; 128:5603-5619. [PMID: 30418174 DOI: 10.1172/jci121679] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 09/27/2018] [Indexed: 12/22/2022] Open
Abstract
The agonistic/antagonistic biocharacter of selective estrogen receptor modulators (SERMs) can have therapeutic advantages, particularly in the case of premenopausal breast cancers. Although the contradictory effects of these modulators have been studied in terms of crosstalk between the estrogen receptor α (ER) and coactivator dynamics and growth factor signaling, the molecular basis of these mechanisms is still obscure. We identify a series of regulatory mechanisms controlling cofactor dynamics on ER and SERM function, whose activities require F-box protein 22 (Fbxo22). Skp1, Cullin1, F-box-containing complex (SCFFbxo22) ubiquitylated lysine demethylase 4B (KDM4B) complexed with tamoxifen-bound (TAM-bound) ER, whose degradation released steroid receptor coactivator (SRC) from ER. Depletion of Fbxo22 resulted in ER-dependent transcriptional activation via transactivation function 1 (AF1) function, even in the presence of SERMs. In living cells, TAM released SRC and KDM4B from ER in a Fbxo22-dependent manner. SRC release by TAM required Fbxo22 on almost all ER-SRC-bound enhancers and promoters. TAM failed to prevent the growth of Fbxo22-depleted, ER-positive breast cancers both in vitro and in vivo. Clinically, a low level of Fbxo22 in tumor tissues predicted a poorer outcome in ER-positive/human epidermal growth factor receptor type 2-negative (HER2-negative) breast cancers with high hazard ratios, independently of other markers such as Ki-67 and node status. We propose that the level of Fbxo22 in tumor tissues defines a new subclass of ER-positive breast cancers for which SCFFbxo22-mediated KDM4B degradation in patients can be a therapeutic target for the next generation of SERMs.
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Affiliation(s)
- Yoshikazu Johmura
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Ichiro Maeda
- Department of Pathology St. Marianna University School of Medicine, Kawasaki, Japan
| | - Narumi Suzuki
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Wenwen Wu
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Atsushi Goda
- Department of Pathology St. Marianna University School of Medicine, Kawasaki, Japan
| | - Mariko Morita
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Kiyoshi Yamaguchi
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Mizuki Yamamoto
- Division of Cellular and Molecular Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Satoi Nagasawa
- Division of Breast and Endocrine Surgery, Department of Surgery, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Yasuyuki Kojima
- Division of Breast and Endocrine Surgery, Department of Surgery, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Koichiro Tsugawa
- Division of Breast and Endocrine Surgery, Department of Surgery, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Natsuko Inoue
- Division of Breast and Endocrine Surgery, Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Yasuo Miyoshi
- Division of Breast and Endocrine Surgery, Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Tomo Osako
- Department of Pathology, The Cancer Institute Hospital, and
| | | | - Reo Maruyama
- Project for Cancer Epigenomics, the Cancer Institute of the Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Jun-Ichiro Inoue
- Division of Cellular and Molecular Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yoichi Furukawa
- Division of Clinical Genome Research, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Tomohiko Ohta
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Makoto Nakanishi
- Division of Cancer Cell Biology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
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20
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Negishi Y, Miya F, Hattori A, Johmura Y, Nakagawa M, Ando N, Hori I, Togawa T, Aoyama K, Ohashi K, Fukumura S, Mizuno S, Umemura A, Kishimoto Y, Okamoto N, Kato M, Tsunoda T, Yamasaki M, Kanemura Y, Kosaki K, Nakanishi M, Saitoh S. A combination of genetic and biochemical analyses for the diagnosis of PI3K-AKT-mTOR pathway-associated megalencephaly. BMC Med Genet 2017; 18:4. [PMID: 28086757 PMCID: PMC5237172 DOI: 10.1186/s12881-016-0363-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 12/21/2016] [Indexed: 11/10/2022]
Abstract
Background Constitutive activation of the PI3K-AKT-mTOR pathway (mTOR pathway) underlies megalencephaly in many patients. Yet, prevalence of the involvement of the PI3K-AKT-mTOR pathway in patients with megalencephaly remains to be elucidated, and molecular diagnosis is challenging. Here, we have successfully established a combination of genetic and biochemical methods for diagnosis of mTOR pathway-associated megalencephaly, and have attempted to delineate the clinical characteristics of the disorder. Methods Thirteen patients with an increased head circumference and neurological symptoms participated in the study. To evaluate the activation of the mTOR pathway, we performed western blot analysis to determine the expression levels of phosphorylated S6 ribosomal protein (phospho-S6 protein) in lymphoblastoid cell lines from 12 patients. Multiplex targeted sequencing analysis for 15 genes involved in the mTOR pathway was performed on 12 patients, and whole-exome sequencing was performed on one additional patient. Clinical features and MRI findings were also investigated. Results We identified pathogenic mutations in six (AKT3, 1 patient; PIK3R2, 2 patients; PTEN, 3 patients) of the 13 patients. Increased expression of phospho-S6 protein was demonstrated in all five mutation-positive patients in whom western blotting was performed, as well as in three mutation-negative patients. Developmental delay, dysmorphic facial features were observed in almost all patients. Syndactyly/polydactyly and capillary malformations were not observed, even in patients with AKT3 or PIK3R2 mutations. There were no common phenotypes or MRI findings among these patients. Conclusions A combination of genetic and biochemical methods successfully identified mTOR pathway involvement in nine of 13 (approximately 70%) patients with megalencephaly, indicating a major contribution of the pathway to the pathogenesis of megalencephaly. Our combined approach could be useful to identify patients who are suitable for future clinical trials using an mTOR inhibitor.
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Affiliation(s)
- Yutaka Negishi
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Fuyuki Miya
- Department of Medical Science Mathematics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Ayako Hattori
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Present address: Division of Cancer Cell Biology, Department of Cancer Biology, Instuite of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Motoo Nakagawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Naoki Ando
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Ikumi Hori
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Takao Togawa
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Kohei Aoyama
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Kei Ohashi
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Shinobu Fukumura
- Department of Pediatrics, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Seiji Mizuno
- Department of Pediatrics, Central Hospital, Aichi Human Service Center, Aichi, Japan
| | - Ayako Umemura
- Department of Pediatric Neurology, Central Hospital, Aichi Human Service Center, Aichi, Japan
| | - Yoko Kishimoto
- Department of Pediatrics, Shimada Ryoiku Center Hachiouji, Tokyo, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Yamagata University Faculty of Medicine, Yamagata, Japan.,Present address: Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Tatsuhiko Tsunoda
- Department of Medical Science Mathematics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.,Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Mami Yamasaki
- Department of Neurosurgery, Takatsuki General Hospital, Osaka, Japan
| | - Yonehiro Kanemura
- Division of Regenerative Medicine, Institute for Clinical Research, Osaka National Hospital, National Hospital Organization, Osaka, Japan.,Department of Neurosurgery, Osaka National Hospital, National Hospital Organization, Osaka, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Nakanishi
- Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.,Present address: Division of Cancer Cell Biology, Department of Cancer Biology, Instuite of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-Cho, Mizuho-Ku, Nagoya, 467-8601, Japan.
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21
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Johmura Y, Nakanishi M. Multiple facets of p53 in senescence induction and maintenance. Cancer Sci 2016; 107:1550-1555. [PMID: 27560979 PMCID: PMC5132285 DOI: 10.1111/cas.13060] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 07/20/2016] [Accepted: 08/19/2016] [Indexed: 12/28/2022] Open
Abstract
Cellular senescence is a state of durable cell cycle arrest with metabolic activities distinct from those of the proliferative state. Since senescence was originally reported to be induced by various genotoxic stressors, such as telomere erosion and oncogenic signaling, it has been proposed to play a pivotal role in aging‐related changes and as an antitumorigenic barrier in vivo. However, the mechanisms underlying its induction and maintenance remain entirely elusive. We have recently found that abrupt activation of p53 at G2 results in a cell skipping mitosis and subsequently undergoing senescence. Surprisingly, we have also found that downregulation of p53 by SCFFbxo22 is crucial for the induction of a senescence‐associated phenotype. In this review, we provide an overview of recent advances in understanding the mechanisms underlying the timing and magnitude of activation of p53 during senescence.
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Affiliation(s)
- Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Makoto Nakanishi
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Division of Cancer Cell Biology, Department of Cancer Biology, Instuite of Medical Science, The University of Tokyo, Tokyo, Japan
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22
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Wu W, Togashi Y, Johmura Y, Miyoshi Y, Nobuoka S, Nakanishi M, Ohta T. HP1 regulates the localization of FANCJ at sites of DNA double-strand breaks. Cancer Sci 2016; 107:1406-1415. [PMID: 27399284 PMCID: PMC5084677 DOI: 10.1111/cas.13008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 07/03/2016] [Accepted: 07/06/2016] [Indexed: 12/19/2022] Open
Abstract
The breast and ovarian cancer predisposition protein BRCA1 forms three mutually exclusive complexes with Fanconi anemia group J protein (FANCJ, also called BACH1 or BRIP1), CtIP, and Abraxas/RAP80 through its BRCA1 C terminus (BRCT) domains, while its RING domain binds to BRCA1‐associated RING domain 1 (BARD1). We recently found that the interaction between heterochromatin protein 1 (HP1) and BARD1 is required for the accumulation of BRCA1 and CtIP at sites of DNA double‐strand breaks. Here, we investigated the importance of HP1 and BARD1–HP1 interaction in the localization of FANCJ together with the other BRCA1–BRCT binding proteins to clarify the separate role of the HP1‐mediated pathway from the RNF8/RNF168‐induced ubiquitin‐mediated pathway for BRCA1 function. FANCJ interacts with HP1γ in a BARD1‐dependent manner, and this interaction was enhanced by ionizing radiation or irinotecan hydrochloride treatment. Simultaneous depletion of all three HP1 isoforms with shRNAs disrupts the accumulation of FANCJ and CtIP, but not RAP80, at double‐strand break sites. Replacement of endogenous BARD1 with a mutant BARD1 that is incapable of binding to HP1 also disrupts the accumulation of FANCJ and CtIP, but not RAP80. In contrast, RNF168 depletion disrupts the accumulation of only RAP80, but not FANCJ or CtIP. Consequently, the accumulation of conjugated ubiquitin was only inhibited by RNF168 depletion, whereas the accumulation of RAD51 and sister chromatid exchange were only inhibited by HP1 depletion or disruption of the BARD1–HP1 interaction. Taken together, the results suggest that the BRCA1–FANCJ and BRCA1–CtIP complexes are not downstream of the RNF8/RNF168/ubiquitin pathway, but are instead regulated by the HP1 pathway that precedes homologous recombination DNA repair.
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Affiliation(s)
- Wenwen Wu
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Yukiko Togashi
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Yasuo Miyoshi
- Division of Breast and Endocrine Surgery, Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Sachihiko Nobuoka
- Laboratory Medicine, St. Marianna University Graduate School of Medicine, Kawasaki, Japan
| | - Makoto Nakanishi
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Division of Cancer Cell Biology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Tomohiko Ohta
- Department of Translational Oncology, St. Marianna University Graduate School of Medicine, Kawasaki, Japan.
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23
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Shimada M, Goshima T, Matsuo H, Johmura Y, Haruta M, Murata K, Tanaka H, Ikawa M, Nakanishi K, Nakanishi M. Essential role of autoactivation circuitry on Aurora B-mediated H2AX-pS121 in mitosis. Nat Commun 2016; 7:12059. [PMID: 27389782 PMCID: PMC4941122 DOI: 10.1038/ncomms12059] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Accepted: 05/20/2016] [Indexed: 02/06/2023] Open
Abstract
Proper deposition and activation of Aurora B at the centromere is critical for faithful chromosome segregation in mammals. However, the mechanistic basis for abrupt Aurora B kinase activation at the centromere has not yet been fully understood. We demonstrate here that Aurora B-mediated phosphorylation of histone H2AX at serine 121 (H2AX-pS121) promotes Aurora B autophosphorylation and is essential for proper chromosome segregation. Aurora B-mediated H2AX-pS121 is specifically detected at the centromere during mitosis. H2AX depletion results in a severe defect in activation and deposition of Aurora B at this locus. A phosphomimic mutant of H2AX at S121 interacts with activated Aurora B more efficiently than wild-type in vitro. Taken together, these results propose a model in which Aurora B-mediated H2AX-pS121 probably provide a platform for Aurora B autoactivation circuitry at centromeres and thus play a pivotal role in proper chromosome segregation. Aurora B activation at the centromere is critical for faithful chromosome segregation in mammals. Here the authors show that Aurora B-mediated phosphorylation of histone H2AX at serine 121 is essential for Aurora B auto-activation circuitry at centromeres, ensuring proper chromosome segregation.
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Affiliation(s)
- Midori Shimada
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Takahiro Goshima
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Hiromi Matsuo
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Mayumi Haruta
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Kazuhiro Murata
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Hiromitsu Tanaka
- Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki 859-3298, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Keiko Nakanishi
- Department of Perinatology, Institute for Developmental Research, Aichi Human Service Center, 713-8 Kamiya-cho, Kasugai, Aichi 489-0392, Japan
| | - Makoto Nakanishi
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan.,Division of Cancer Cell Biology, Department of Cancer Biology, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
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24
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Johmura Y, Sun J, Kitagawa K, Nakanishi K, Kuno T, Naiki-Ito A, Sawada Y, Miyamoto T, Okabe A, Aburatani H, Li S, Miyoshi I, Takahashi S, Kitagawa M, Nakanishi M. SCF(Fbxo22)-KDM4A targets methylated p53 for degradation and regulates senescence. Nat Commun 2016; 7:10574. [PMID: 26868148 PMCID: PMC4754341 DOI: 10.1038/ncomms10574] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 12/30/2015] [Indexed: 12/25/2022] Open
Abstract
Recent evidence has revealed that senescence induction requires fine-tuned activation of p53, however, mechanisms underlying the regulation of p53 activity during senescence have not as yet been clearly established. We demonstrate here that SCFFbxo22-KDM4A is a senescence-associated E3 ligase targeting methylated p53 for degradation. We find that Fbxo22 is highly expressed in senescent cells in a p53-dependent manner, and that SCFFbxo22 ubiquitylated p53 and formed a complex with a lysine demethylase, KDM4A. Ectopic expression of a catalytic mutant of KDM4A stabilizes p53 and enhances p53 interaction with PHF20 in the presence of Fbxo22. SCFFbxo22-KDM4A is required for the induction of p16 and senescence-associated secretory phenotypes during the late phase of senescence. Fbxo22−/− mice are almost half the size of Fbxo22+/− mice owing to the accumulation of p53. These results indicate that SCFFbxo22-KDM4A is an E3 ubiquitin ligase that targets methylated p53 and regulates key senescent processes. Cellular senescence—the permanent cessation of cell proliferation—is a process that can be deregulated in cancer and other aging-related diseases. Here the authors demonstrate that the SCFFbxo22-KDM4A complex plays an essential role during senescence as an E3 ligase that targets methylated p53 for degradation.
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Affiliation(s)
- Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Jia Sun
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Kyoko Kitagawa
- Department of Molecular Biology, Hamamatsu University School of Medicine, Higashi-ku, 431-3192 Hamamatsu, Japan
| | - Keiko Nakanishi
- Department of Perinatology, Aichi Human Service Center, Institute for Developmental Research, 713-8 Kamiya-cho, Kasugai, Aichi 489-0392, Japan
| | - Toshiya Kuno
- Department of Experimental Pathology and Tumor Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Aya Naiki-Ito
- Department of Experimental Pathology and Tumor Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Yumi Sawada
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Tomomi Miyamoto
- Department of Comparative and Experimental Medicine and Center for Animal Sciences, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Atsushi Okabe
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, 153-8904 Tokyo, Japan
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, 153-8904 Tokyo, Japan
| | - ShengFan Li
- Zhongshan Hospital of Dalian University, 6 Jiefang St, Zhongshan District, 116001 Dalian, China
| | - Ichiro Miyoshi
- Department of Comparative and Experimental Medicine and Center for Animal Sciences, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Satoru Takahashi
- Department of Experimental Pathology and Tumor Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
| | - Masatoshi Kitagawa
- Department of Molecular Biology, Hamamatsu University School of Medicine, Higashi-ku, 431-3192 Hamamatsu, Japan
| | - Makoto Nakanishi
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, 467-8601 Nagoya, Japan
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Haruta M, Shimada M, Nishiyama A, Johmura Y, Le Tallec B, Debatisse M, Nakanishi M. Loss of maintenance DNA methylation results in abnormal DNA origin firing during DNA replication. Biochem Biophys Res Commun 2015; 469:960-6. [PMID: 26721438 DOI: 10.1016/j.bbrc.2015.12.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 12/20/2015] [Indexed: 12/22/2022]
Abstract
The mammalian maintenance methyltransferase DNMT1 [DNA (cytosine-5-)-methyltransferase 1] mediates the inheritance of the DNA methylation pattern during replication. Previous studies have shown that depletion of DNMT1 causes a severe growth defect and apoptosis in differentiated cells. However, the detailed mechanisms behind this phenomenon remain poorly understood. Here we show that conditional ablation of Dnmt1 in murine embryonic fibroblasts (MEFs) resulted in an aberrant DNA replication program showing an accumulation of late-S phase replication and causing severely defective growth. Furthermore, we found that the catalytic activity and replication focus targeting sequence of DNMT1 are required for a proper DNA replication program. Taken together, our findings suggest that the maintenance of DNA methylation by DNMT1 plays a critical role in proper regulation of DNA replication in mammalian cells.
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Affiliation(s)
- Mayumi Haruta
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Midori Shimada
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan.
| | - Atsuya Nishiyama
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Benoît Le Tallec
- Institut Curie, Centre de Recherche, 26 rue d'Ulm, CNRS UMR 3244, 75248 ParisCedex 05, France
| | - Michelle Debatisse
- Institut Curie, Centre de Recherche, 26 rue d'Ulm, CNRS UMR 3244, 75248 ParisCedex 05, France
| | - Makoto Nakanishi
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan.
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Hirokawa T, Shiotani B, Shimada M, Murata K, Johmura Y, Haruta M, Tahara H, Takeyama H, Nakanishi M. CBP-93872 inhibits NBS1-mediated ATR activation, abrogating maintenance of the DNA double-strand break-specific G2 checkpoint. Cancer Res 2014; 74:3880-9. [PMID: 24876101 DOI: 10.1158/0008-5472.can-13-3604] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
CBP-93872 was previously identified as a G2 checkpoint inhibitor using a cell-based high-throughput screening system. However, its molecular actions as well as cellular targets are largely unknown. Here, we uncovered the molecular mechanisms underlying abrogation of the G2 checkpoint by CBP-93872. CBP-93872 specifically abrogates the DNA double-stranded break (DSB)-induced G2 checkpoint through inhibiting maintenance but not initiation of G2 arrest because of specific inhibition of DSB-dependent ATR activation. Hence, ATR-dependent phosphorylation of Nbs1 and replication protein A 2 upon DSB was strongly suppressed in the presence of CBP-93872. CBP-93872 did not seem to inhibit DNA-end resection, but did inhibit Nbs1-dependent and ssDNA-induced ATR activation in vitro in a dose-dependent manner. Taken together, our results suggest that CBP-93872 is an inhibitor of maintenance of the DSB-specific G2 checkpoint and thus might be a strong candidate as the basis for a drug that specifically sensitizes p53-mutated cancer cells to DSB-inducing DNA damage therapy.
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Affiliation(s)
- Takahisa Hirokawa
- Authors' Affiliations: Departments of Cell Biology and Gastroenterological Surgery, Graduate School of Medical Sciences, Nagoya City University, Mizuho-cho, Mizuho-ku, Nagoya; and
| | - Bunsyo Shiotani
- Department of Cellular and Molecular Biology, Hiroshima University, Hiroshima, Japan
| | | | | | | | - Mayumi Haruta
- Authors' Affiliations: Departments of Cell Biology and
| | - Hidetoshi Tahara
- Department of Cellular and Molecular Biology, Hiroshima University, Hiroshima, Japan
| | - Hiromitsu Takeyama
- Gastroenterological Surgery, Graduate School of Medical Sciences, Nagoya City University, Mizuho-cho, Mizuho-ku, Nagoya; and
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Goshima T, Shimada M, Sharif J, Matsuo H, Misaki T, Johmura Y, Murata K, Koseki H, Nakanishi M. Mammal-specific H2A variant, H2ABbd, is involved in apoptotic induction via activation of NF-κB signaling pathway. J Biol Chem 2014; 289:11656-11666. [PMID: 24584930 DOI: 10.1074/jbc.m113.541664] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Histone variants play specific roles in maintenance and regulation of chromatin structures. H2ABbd, an H2A variant, possesses a highly divergent structure compared with canonical H2A and is highly expressed in postmeiotic germ cells, but its functions in the regulation of gene expression are largely unknown. In the present study, we investigated the cellular phenotype associated with enforced H2ABbd expression. Among H2A variants, H2ABbd specifically caused growth defect in human cells and induced apoptosis. H2ABbd expression resulted in degradation of inhibitor of κB-α and translocation of NF-κB into nuclei, indicating the activation of NF-κB. Intriguingly, NF-κB activity was essential for H2ABbd-induced apoptosis. H2ABbd overexpression resulted in DNA damage after release from G1/S, progressed through the S phase slowly, and induced apoptosis. Furthermore, gene expression microarray analysis revealed that expression of H2ABbd activates groups of genes involved in apoptosis and postmeiotic germ cell development, suggesting that H2ABbd might influence transcription. Taken together, our data suggest that H2ABbd may contribute to specific chromatin structures and promote NF-κB activation, which could in turn induce apoptosis in mammalian cells.
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Affiliation(s)
- Takahiro Goshima
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Midori Shimada
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan.
| | - Jafar Sharif
- Development Genetics Group, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiuro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Hiromi Matsuo
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Toshinori Misaki
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Yoshikazu Johmura
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Kazuhiro Murata
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | - Haruhiko Koseki
- Development Genetics Group, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiuro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Makoto Nakanishi
- Department of Cell Biology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan.
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Hamajima N, Johmura Y, Suzuki S, Nakanishi M, Saitoh S. Increased protein stability of CDKN1C causes a gain-of-function phenotype in patients with IMAGe syndrome. PLoS One 2013; 8:e75137. [PMID: 24098681 PMCID: PMC3787065 DOI: 10.1371/journal.pone.0075137] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Accepted: 08/09/2013] [Indexed: 11/18/2022] Open
Abstract
Mutations in the proliferating cell nuclear antigen (PCNA)-binding domain of the CDKN1C gene were recently identified in patients with IMAGe syndrome. However, loss of PCNA binding and suppression of CDKN1C monoubiquitination by IMAGe-associated mutations hardly explain the reduced-growth phenotype characteristic of IMAGe syndrome. We demonstrate here that IMAGe-associated mutations in the CDKN1C gene dramatically increased the protein stability. We identified a novel heterozygous mutation, c.815T>G (p.Ile272Ser), in the CDKN1C gene in three siblings manifesting clinical symptoms associated with IMAGe syndrome and their mother (unaffected carrier). PCNA binding to CDKN1C was disrupted in the case of p.Ile272Ser, and for two other IMAGe-associated mutations, p.Asp274Asn and p.Phe276Val. Intriguingly, the IMAGe-associated mutant CDKN1C proteins were fairly stable even in the presence of cycloheximide, whereas the wild-type protein was almost completely degraded via the proteasome pathway, as shown by the lack of degradation with addition of a proteasome inhibitor, MG132. These results thus suggested that the reduced-growth phenotype of IMAGe syndrome derives from CDKN1C gain-of-function due to IMAGe-associated mutations driving increased protein stability.
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Affiliation(s)
- Naoki Hamajima
- Department of Pediatrics, Nagoya City West Medical Center, Nagoya, Aichi, Japan
- * E-mail:
| | - Yoshikazu Johmura
- Department of Cell Biology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Satoshi Suzuki
- Department of Pediatrics, Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - Makoto Nakanishi
- Department of Cell Biology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
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Nishiyama A, Yamaguchi L, Sharif J, Johmura Y, Kawamura T, Nakanishi K, Shimamura S, Arita K, Kodama T, Ishikawa F, Koseki H, Nakanishi M. Uhrf1-dependent H3K23 ubiquitylation couples maintenance DNA methylation and replication. Nature 2013; 502:249-53. [DOI: 10.1038/nature12488] [Citation(s) in RCA: 252] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 07/18/2013] [Indexed: 12/18/2022]
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30
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Lee KH, Johmura Y, Yu LR, Park JE, Gao Y, Bang JK, Zhou M, Veenstra TD, Yeon Kim B, Lee KS. Identification of a novel Wnt5a-CK1ɛ-Dvl2-Plk1-mediated primary cilia disassembly pathway. EMBO J 2012; 31:3104-17. [PMID: 22609948 PMCID: PMC3400010 DOI: 10.1038/emboj.2012.144] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Accepted: 04/18/2012] [Indexed: 01/17/2023] Open
Abstract
Non-motile primary cilium is an antenna-like structure whose defect is associated with a wide range of pathologies, including developmental disorders and cancer. Although mechanisms regulating cilia assembly have been extensively studied, how cilia disassembly is regulated remains poorly understood. Here, we report unexpected roles of Dishevelled 2 (Dvl2) and interphase polo-like kinase 1 (Plk1) in primary cilia disassembly. We demonstrated that Dvl2 is phosphorylated at S143 and T224 in a manner that requires both non-canonical Wnt5a ligand and casein kinase 1 epsilon (CK1ɛ), and that this event is critical to interact with Plk1 in early stages of the cell cycle. The resulting Dvl2-Plk1 complex mediated Wnt5a-CK1ɛ-Dvl2-dependent primary cilia disassembly by stabilizing the HEF1 scaffold and activating its associated Aurora-A (AurA), a kinase crucially required for primary cilia disassembly. Thus, via the formation of the Dvl2-Plk1 complex, Plk1 plays an unanticipated role in primary cilia disassembly by linking Wnt5a-induced biochemical steps to HEF1/AurA-dependent cilia disassembly. This study may provide new insights into the mechanism underlying ciliary disassembly processes and various cilia-related disorders.
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Affiliation(s)
- Kyung Ho Lee
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Yoshikazu Johmura
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Li-Rong Yu
- Division of Systems Biology, Center for Proteomics, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
| | - Jung-Eun Park
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Yuan Gao
- Division of Systems Biology, Center for Proteomics, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, USA
| | - Jeong K Bang
- Division of Magnetic Resonance, Korea Basic Science Institute, Chung-Buk, Republic of Korea
| | - Ming Zhou
- Laboratory of Proteomics and Analytical Technologies, SAIC-Frederick, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Timothy D Veenstra
- Laboratory of Proteomics and Analytical Technologies, SAIC-Frederick, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Bo Yeon Kim
- Chemical Biology Research Center and World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Chung-Buk, Republic of Korea
| | - Kyung S Lee
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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31
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Johmura Y, Soung NK, Park JE, Yu LR, Zhou M, Bang JK, Kim BY, Veenstra TD, Erikson RL, Lee KS. Regulation of microtubule-based microtubule nucleation by mammalian polo-like kinase 1. Proc Natl Acad Sci U S A 2011; 108:11446-51. [PMID: 21690413 PMCID: PMC3136274 DOI: 10.1073/pnas.1106223108] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Bipolar spindle formation is pivotal for accurate segregation of mitotic chromosomes during cell division. A growing body of evidence suggests that, in addition to centrosome- and chromatin-based microtubule (MT) nucleation, MT-based MT nucleation plays an important role for proper bipolar spindle formation in various eukaryotic organisms. Although a recently discovered Augmin complex appears to play a central role in this event, how Augmin is regulated remains unknown. Here we provide evidence that a mammalian polo-like kinase 1 (Plk1) localizes to mitotic spindles and promotes MT-based MT nucleation by directly regulating Augmin. Mechanistically, we demonstrated that Cdc2-dependent phosphorylation on a γ-tubulin ring complex (γ-TuRC) recruitment protein, Nedd1/GCP-WD, at the previously uncharacterized S460 residue induces the Nedd1-Plk1 interaction. This step appeared to be critical to allow Plk1 to phosphorylate the Hice1 subunit of the Augmin complex to promote the Augmin-MT interaction and MT-based MT nucleation from within the spindle. Loss of either the Nedd1 S460 function or the Plk1-dependent Hice1 phosphorylation impaired both the Augmin-MT interaction and γ-tubulin recruitment to the spindles, thus resulting in improper bipolar spindle formation that ultimately leads to mitotic arrest and apoptotic cell death. Thus, via the formation of the Nedd1-Plk1 complex and subsequent Augmin phosphorylation, Plk1 regulates spindle MT-based MT nucleation to accomplish normal bipolar spindle formation and mitotic progression.
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Affiliation(s)
- Yoshikazu Johmura
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute (NCI), Bethesda, MD 20892
| | - Nak-Kyun Soung
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute (NCI), Bethesda, MD 20892
- Chemical Biology Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Chung-Buk 363-883, South Korea
| | - Jung-Eun Park
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute (NCI), Bethesda, MD 20892
| | - Li-Rong Yu
- Center for Proteomics, Division of Systems Biology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079
| | - Ming Zhou
- Laboratory of Proteomics and Analytical Technologies, SAIC-Frederick, Inc., NCI, Frederick, MD 21702
| | - Jeong K. Bang
- Division of Magnetic Resonance, Korean Basic Science Institute, Ochang, Chung-Buk 363-883, South Korea; and
| | - Bo-Yeon Kim
- Chemical Biology Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Chung-Buk 363-883, South Korea
| | - Timothy D. Veenstra
- Laboratory of Proteomics and Analytical Technologies, SAIC-Frederick, Inc., NCI, Frederick, MD 21702
| | - Raymond L. Erikson
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Kyung S. Lee
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute (NCI), Bethesda, MD 20892
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Park JE, Soung NK, Johmura Y, Kang YH, Liao C, Lee KH, Park CH, Nicklaus MC, Lee KS. Polo-box domain: a versatile mediator of polo-like kinase function. Cell Mol Life Sci 2010; 67:1957-70. [PMID: 20148280 PMCID: PMC2877763 DOI: 10.1007/s00018-010-0279-9] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 01/13/2010] [Accepted: 01/19/2010] [Indexed: 12/23/2022]
Abstract
Members of the polo subfamily of protein kinases have emerged as important regulators in diverse aspects of the cell cycle and cell proliferation. A large body of evidence suggests that a highly conserved polo-box domain (PBD) present in the C-terminal non-catalytic region of polo kinases plays a pivotal role in the function of these enzymes. Recent advances in our comprehension of the mechanisms underlying mammalian polo-like kinase 1 (Plk1)-dependent protein-protein interactions revealed that the PBD serves as an essential molecular mediator that brings the kinase domain of Plk1 into proximity with its substrates, mainly through phospho-dependent interactions with its target proteins. In this review, current understanding of the structure and functions of PBD, mode of PBD-dependent interactions and substrate phosphorylation, and other phospho-independent functions of PBD are discussed.
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Affiliation(s)
- Jung-Eun Park
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Bldg. 37, Rm. 3118, Bethesda, MD, 20892-4258, USA
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Johmura Y, Watanabe K, Kishimoto K, Ueda T, Shimada S, Osada S, Nishizuka M, Imagawa M. Fad24 Causes Hyperplasia in Adipose Tissue and Improves Glucose Metabolism. Biol Pharm Bull 2009; 32:1656-64. [DOI: 10.1248/bpb.32.1656] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yoshikazu Johmura
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Kayoko Watanabe
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Keishi Kishimoto
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Takashi Ueda
- Department of Neurobiology and Anatomy, Graduate School of Medical Sciences, Nagoya City University
| | - Shoichi Shimada
- Department of Neurobiology and Anatomy, Graduate School of Medical Sciences, Nagoya City University
| | - Shigehiro Osada
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Makoto Nishizuka
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Masayoshi Imagawa
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University
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34
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Johmura Y, Osada S, Nishizuka M, Imagawa M. FAD24, a regulator of adipogenesis, is required for the regulation of DNA replication in cell proliferation. Biol Pharm Bull 2008; 31:1092-5. [PMID: 18520036 DOI: 10.1248/bpb.31.1092] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A novel gene, factor for adipocyte differentiation 24 (fad24), promotes adipogenesis by controlling DNA replication early on during a stage referred to as mitotic clonal expansion (MCE). MCE is considered distinct from the proliferation of pre-confluent cells, so we investigated the role of fad24 in the process. First, the expression of fad24 was examined in pre-confluent and post-confluent 3T3-L1 preadipocytes, NIH-3T3 fibroblasts, and C2C12 myoblasts. fad24 was strongly expressed in the pre-confluent cells. The knockdown of fad24 by RNA interference impaired the ability of the pre-confluent cells to proliferate. Moreover, bromodeoxyuridine labeling and chromatin immunoprecipitation experiments indicated that the knockdown inhibited DNA synthesis by preventing the recruitment of histone acetyltransferase binding to ORC1 (HBO1), a component of the pre-replicative complex, to origins. fad24 plays positive roles in the proliferation of pre-confluent cells as well as adipogenesis.
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Affiliation(s)
- Yoshikazu Johmura
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, Japan
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35
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Johmura Y, Suzuki M, Osada S, Nishizuka M, Imagawa M. FAD24, a regulator of adipogenesis and DNA replication, inhibits H-RAS-mediated transformation by repressing NF-kappaB activity. Biochem Biophys Res Commun 2008; 369:464-70. [PMID: 18284919 DOI: 10.1016/j.bbrc.2008.02.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Accepted: 02/09/2008] [Indexed: 11/29/2022]
Abstract
We have previously reported that a novel gene, factor for adipocyte differentiation (fad) 24, promotes adipogenesis. Moreover, our recent findings indicated that this regulation involves the control of DNA replication by fad24 during the early stage in adipogenesis. Considering that abnormal regulation of DNA replication is linked to transformation, we examined whether the over-expression of fad24 leads to the formation of colonies in soft agarose. The over-expression itself generated no colonies. Rather, it inhibited oncogenic H-ras-mediated formation of colonies. The over-expression of histone acetyltransferase binding to ORC1 (HBO1), a partner of FAD24, also inhibited the H-ras-mediated colony-forming process. Furthermore, we revealed that FAD24 interacts with p65, a subunit of NF-kappaB which is known to be activated by H-ras. The over-expression of fad24 repressed NF-kappaB-mediated promoter activity and gene expression. Taken together, these results reveal a novel role for fad24 in the repression of NF-kappaB activity and H-ras-mediated transformation.
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Affiliation(s)
- Yoshikazu Johmura
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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Johmura Y, Osada S, Nishizuka M, Imagawa M. FAD24 acts in concert with histone acetyltransferase HBO1 to promote adipogenesis by controlling DNA replication. J Biol Chem 2007; 283:2265-74. [PMID: 18029353 DOI: 10.1074/jbc.m707880200] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Preadipocytes differentiate into adipocytes through approximately two rounds of mitosis, referred to as mitotic clonal expansion (MCE), but the events early in the differentiation process are not fully understood. Previously, we identified and characterized a novel gene, fad24 (factor for adipocyte differentiation 24), induced to express at the early stages of adipocyte differentiation. Although fad24 clearly has crucial roles in adipogenesis, its precise functions remain unknown. Here we show that the knockdown of fad24 by RNAi in 3T3-L1 preadipocytes repressed MCE. Moreover, FAD24 interacts with HBO1, a histone acetyltransferase and positive regulator of DNA replication initiation. The knockdown of hbo1 repressed MCE and adipogenesis, indicating that FAD24 acts in concert with HBO1 to promote adipogenesis by controlling DNA replication. Regarding the molecular mechanisms behind the regulation of DNA replication by fad24, we revealed that FAD24 co-localizes with HBO1 to chromatin during late mitosis, which is when the prereplication initiation complex is assembled. Furthermore, chromatin immunoprecipitation experiments indicated that FAD24 localizes to origins of DNA replication with HBO1. When fad24 expression was inhibited during adipocyte differentiation, the recruitment of HBO1 to origins of DNA replication was reduced. Thus, FAD24 controls DNA replication by recruiting HBO1 to origins of DNA replication and is required for MCE during adipocyte differentiation.
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Affiliation(s)
- Yoshikazu Johmura
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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Abstract
The mid- and late stages of adipocyte differentiation are known to be regulated by transcription factors such as peroxisome proliferator-activated receptor (PPAR)gamma and CCAAT-box/enhancer binder protein (C/EBP) families. However, events in the early stage of adipocyte differentiation remain largely unknown. To gain insights into the molecular mechanisms underlying the beginning of adipocyte differentiation, we have isolated 102 genes, which are induced at the beginning of the differentiation of mouse 3T3-L1 preadipocytes, using the polymerase chain reaction (PCR)-subtraction method. Of these, 46 appear to be unknown genes. Since rapid amplification of cDNA end (RACE), cDNA library screening, and a genome database search have revealed that two of these genes are novel, we have named them factor for adipocyte differentiation (fad) 24 and fad158. The database research of amino acid sequences revealed that fad24 has a basic leucine zipper motif and an NOC domain, and fad158 has four transmembrane domains and eight leucine-rich repeats. The expression of fad24 and fad158 transiently increased after the addition of adipogenic inducers [insulin, dexamethasone, 3-isobutyl-1-methylxanthine, fetal bovine serum (FBS)]. RNAi-mediated knockdown of fad24 or antisense fad158 inhibited adipogenesis of 3T3-L1 preadipocytes and decreased expressions of PPARgamma and C/EBPalpha. Furthermore, the constitutive overexpression of fad24 or fad158 in the mouse fibroblast cell line NIH-3T3 resulted in adipocyte conversion when stimulated with adipogenic inducers and PPARgamma ligand BRL49653. Moreover, it was found that FAD24 localizes in the nucleus, especially within nuclear speckles and nucleolus, and FAD158 localizes to the endoplasmic reticulum (ER). Taken together, fad24 and fad158 appear to regulate adipocyte differentiation by activating the PPARgamma pathway.
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Affiliation(s)
- Yoshikazu Johmura
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho-ku, Nagoya City, Japan.
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38
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Abstract
During adipocyte differentiation, there is an underlying complex series of gene expressions. We have previously isolated many genes whose expression levels are quickly elevated by the addition of inducers to mouse 3T3-L1 preadipocyte cells. Here we report the isolation and characterization of SLC39A14, a member of the LZT proteins, one of the subfamilies of ZIP transporters. The expression of the SLC39A14 gene was strongly and rapidly induced at the early stages of differentiation. Moreover, it was highly restricted to the potential differentiation state of 3T3-L1 cells and the expression level was quite low in the nonadipogenic NIH-3T3 cells, indicating a dominant expression in adipocyte differentiation. The zinc uptake assay revealed that SLC39A14 functions as a zinc transporter. Taken together, these results suggest that SLC39A14 plays a role as a zinc transporter during the early stages of adipogenesis.
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Affiliation(s)
- Kei Tominaga
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, Japan
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Tominaga K, Kondo C, Johmura Y, Nishizuka M, Imagawa M. The novel gene fad104, containing a fibronectin type III domain, has a significant role in adipogenesis. FEBS Lett 2005; 577:49-54. [PMID: 15527760 DOI: 10.1016/j.febslet.2004.09.062] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2004] [Accepted: 09/09/2004] [Indexed: 10/26/2022]
Abstract
A novel gene named fad104 (factor for adipocyte differentiation-104), whose expression level quickly increased in the early stage of adipogenesis, was isolated and characterized. The deduced amino acid sequence of fad104 revealed the possible presence of a fibronectin type III domain and transmembrane domain. The expression of fad104 was detected in adipocyte differentiable 3T3-L1 cells but not observed in the non-adipogenic cell line NIH-3T3. Moreover, the ability of 3T3-L1 cells to differentiate declined with the knockdown of fad104 by RNA interference, strongly indicating that fad104 functions as a positive regulator of adipogenesis.
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Affiliation(s)
- Kei Tominaga
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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40
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Tominaga K, Johmura Y, Nishizuka M, Imagawa M. Fad24, a mammalian homolog of Noc3p, is a positive regulator in adipocyte differentiation. J Cell Sci 2004; 117:6217-26. [PMID: 15564382 DOI: 10.1242/jcs.01546] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Adipocyte differentiation is controlled by complex actions involving gene expression and signal transduction. From metaphase to anaphase, peroxisome proliferator-activated receptor γ, the CCAAT/enhancer-binding protein family and sterol regulatory element-binding protein-1 are known to function as master regulators. However, the mechanism underlying the earliest step, which triggers the initiation of differentiation, remains unknown. In previous reports, we have isolated a number of genes, whose expression increases in the early stage of differentiation in the mouse 3T3-L1 preadipocyte cell line. Here we report the cloning of the full-length cDNA and characterization of an unknown gene isolated previously and named fad24 (factor for adipocyte differentiation 24). Fad24 encodes a protein consisting of 807 amino acids. The deduced amino acid sequence was shown to have a basic leucine zipper motif and a NOC domain. Expression of fad24 was rapidly induced after stimulation with inducers. Furthermore, overexpression of fad24 in NIH-3T3 cells promoted adipogenesis in the presence of a ligand for peroxisome proliferator-activated receptor γ. FAD24 localizes in the nucleus, especially within nuclear speckles. As the nuclear speckle functions as a nascent transcription and pre-mRNA splicing machinery, there is a possibility that FAD24 functions as one of the components for transcription and/or pre-mRNA splicing and positively regulates adipocyte differentiation.
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Affiliation(s)
- Kei Tominaga
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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41
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Wada M, Kimura M, Daimon M, Kurita K, Kato T, Johmura Y, Johkura K, Kuroiwa Y, Sobue G. An unusual phenotype of McLeod syndrome with late onset axonal neuropathy. J Neurol Neurosurg Psychiatry 2003; 74:1697-8. [PMID: 14638894 PMCID: PMC1757430 DOI: 10.1136/jnnp.74.12.1697] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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42
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Nishiyama T, Johkura K, Johmura Y, Momoo T, Yamada H, Kuroiwa Y. Encephalitis with MRI abnormality as a manifestation of central nervous system involvement of adult T cell leukemia/lymphoma. Eur Neurol 2002; 46:218-20. [PMID: 11721131 DOI: 10.1159/000050809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- T Nishiyama
- Department of Neurology, Medical Center, Yokohama City University, Yokohama, Japan
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Johmura Y, Johkura K, Kuroiwa Y. [Bilateral ptosis, bilateral upgaze and adduction paresis, and monocular downgaze paresis from a mesencephalic infarction]. No To Shinkei 2001; 53:363-7. [PMID: 11360476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
We report a 57-year-old man with an ischemic lesion in the midbrain. In the acute stage, he presented with bilateral ptosis and markedly limited extraocular motion except for bilateral abduction and downward motion of the right eye. The pupillary reaction to light of his left eye also was impaired. He was admitted to our hospital, and brain MRI showed a small infarction extending from the left paramedian to the median tegmentum of the midbrain. Three weeks after admission, the ptosis and limited extraocular right eye motion had resolved. The pupillary reaction and downward motion of the left eye normalized gradually within 3 weeks. Two months after admission, ptosis and the limited left eye adduction were partially resolved, but the markedly limited upgaze of the left eye had not changed. Initial neuro-ophthalmologic findings suggested involvement of the caudal part of the oculomotor nucleus and the left oculomotor nerve within the midbrain. The pattern of neuro-ophthalmologic impairment seen in our patient led us to conclude that the caudal oculomotor nucleus and medial part of the fascicular fibers of the left oculomotor nerve probably recovered first, after which recovery of the fascicular fibers progressed laterally. The results of serial MRI were consistent with this interpretation.
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Affiliation(s)
- Y Johmura
- Department of Neurology, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
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